Cholera Toxins. Produced by Vibrio cholerae, cholera toxin (CT) is a multimeric enterotoxin that transfers ADP-ribose to a G protein, locking adenylate cyclase in an 'on' position.
echinoderm. n. 1. (Animals) any of the marine invertebrate animals constituting the phylum Echinodermata, characterized by tube feet, a calcite body-covering (test), and a five-part symmetrical body. The group includes the starfish, sea urchins, and sea cucumbers.ny of various invertebrate sea animals having a hard spiny outer covering, an internal skeleton, and a radially symmetrical body. Starfish, sea urchins, and sea cucumbers are echinoderms.
When you have finished this page, take the Echinoderm Quiz: Starfish belong to a group or phylum of animals called echinoderms. This means spiny skinned in Greek. Echinoderms live in salt water only. They sgenerally have five arms and dwell at the bottom of oceans' levels.There are around 6000 species of echinoderms. Echinoderm has a mouth and stomach area. Some have a mouth on the bottom and an anus on the top.Starfish can actually turn their stomachs outside of their body and insert it into its prey's such as a clam. Echinoderms have a relatively big gut area.